code: def setUp(self):
      super().setUp()
  
      self.datalist = [
          {
              "image": "spleen_19.nii.gz",
              "label": "spleen_label_19.nii.gz",
          },
          {
              "image": "spleen_31.nii.gz",
              "label": "spleen_label_31.nii.gz",
          },
      ]
  
      self.transform = Compose(
          [SimulateDelayd(keys=["image", "label"], delay_time=0.1)]
      )
  
file_path: MONAI/tests/test_thread_buffer.py
imports: from __future__ import annotations
  import sys
  import time
  import unittest
  import torch
  from monai.data import DataLoader, Dataset, ThreadBuffer, ThreadDataLoader
  from monai.transforms import Compose, SimulateDelayd
  from monai.utils import PerfContext, set_determinism
  from tests.utils import assert_allclose
label_desc: Use image node_id 1 for calling the TestDataLoader obj's underlying member method code with example usage: obj.setUp() without return types